Prior to the late 1800s, rotating shaft power was limited mainly to trains and ships. There were wind and water mills for pumping water and grinding grains and some steam-driven water pumps and ventilation fans. However, few people lived in windy regions or near fast-moving streams. Some ventilation fan designs for mine shafts were powered by man, wind or water pressure.
Citation: ASHRAE Journal, Vol. 41, No. 1, January 1999
Product Details
- Published:
- 1999
- Number of Pages:
- 4
- File Size:
- 1 file , 3.7 MB
- Product Code(s):
- D-22946
